Zkl bearings manufactures bearings which are ideal to be used for vibratory machines and equipments. The company supplies bearings in various types such as radial, double-row, self-aligning spherical-roller bearing provided with a solid, one-piece, rib-type cage of brass mh or with a two-piece, solid brass cage m, both bearings being centered on outer ring. Bearings in standard version are manufactured always with lubricating groove and with three relubricating holes provided in the outer ring. This manufacturing version is not marked on the bearing. Bearings with cylindrical bore exhibit narrower bore and outer-diameter tolerances whereas bearings with tapered bore k have narrower outer-diameter, tolerance only. The bearings manufactured by the company exhibit an extended radial clearance within range of c4 which is also not such marked and is equally as centering of the cage and the groove with relubricating holes, incorporated in the joint symbol, d1. The bearings are also offered in design version e. These bearings can be applied for rough operating conditions specially for vibratory machines, shaking screens and grates, vibratory belts, reversing appliances, traction machines, etc.
